Se desea preparar 850 g de solución al 28%m/m

What is a metal replacement reaction

How many moles of al3+ ions are in 1.25 moles of al2o3

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?